Moving to Web-based student assessment is a natural progression from current deployment of Web-based delivery of teaching materials. This paper notes similarities in requirements between network-based student assessment and network-based e-commerce. The parallels are instructive since they indicate the stringent technical demands that must be met by both contexts if confidence is to be assured....

We present a new multi-class graph-based transduction algorithm. Examples are associated with vertices in an undirected weighted graph and edge weights correspond to a similarity measure between examples. Typical algorithms in such a setting perform label propagation between neighbours, ignoring the quality, or estimated quality, in the labeling of various nodes. We introduce an additional quan...